The following sources, census substitutes, families histories and newspapers and such are available at the following locations: SLC = Salt Lake City fimlm number available through your nearest local Family History Center, NAI = National Archives of Ireland, NLI = National Library of Ireland, GO = Genealogical Office in Dublin, CCHC = Carlow County Heritage Center. BL = Belfast Library. For further information about their actual addresses, please see: Important Addresses.
| Date | Source | Location |
| 1641 | Book of Survey and Distribution | NLI |
| 1659 | Pendes Census of Ireland | NLI, SLC 925648 |
| 1669 | Householers of the Parish of Carlow | J. Kildare Arch. Soc 19(1918-21) |
| 1739 | Tenants of the Lordship of Carlow | J. Kildare Arch. Soc 12 (2)(1937) |
| 1767 | Co. Carlow Freeholders | Ir. Gen 12(1) and (2)(1980) |
| 1775 | Catholic Qualification Rolls Extracts | DKPRI |
| 1788 | Richard Lucas' General directory of the Kingdom of Ireland | CCHC |
| 1798 | List of Persons who Suffered Losses During '98 Rebellion | NLI |
| 1820 | J. Pigot's commercial Directory of Ireland | CCHC |
| 1821 | Extracts from the Government Census for Fennagh Parish relating to Clowry, Foley, White, Lennon, Rigney, and Gregor | SLC 100158 |
| 1824 | J. Pigot's City of Dublin and Hibernian Provincial Directory | CCHC |
| 1835 | List of Electors | NLI |
| 1837 | Marksmen (illiterate voters) | Parl. Papers 11(2)(1837) |
| 1839 | T. Shearman's New Commercial Directory for the Cities of Waterford, Kilkenny, Clonmnel, Carrick on suir, New Ross, and Carlow. | CCHC |
| 1840 | f. Kinder's New Triennial and Commercial Directory for 1840,41, 42 | CCHC |
| 1843 | Voters List | NAI |
| 1846 | Ratepayers in Barragh Electoral Division | NLI |
| 1846 | Slater's National Commercial Directory of Ireland | CCHC |
| 1856 | Slater's National Commercial Directory of Ireland | CCHC |
| 1870 | Slater's Directory of Ireland | CCHC |
| 1881 | Slater's Royal National Commercial Directory of Ireland | CCHC |
| 1886 | Francis Guy's Postal Directory of Munster | CCHC |
| 1894 | Slater's Royal National Commercial Directory of Ireland | CCHC |
| 1901 | Census | SLC 812107-16 |
| 1911 | Census | NAI |
| 1642-1858 | Leighlin | . |
| 1691-1845 | Leighlin and Ferns | NAI, GO, SLC 100169-172, 100870-71 |
| 1821-37 | Tithe Applotment Survey | . |
| 1824-26 | Lists of labourers and observations on their work Castletown, | NL |
| 1832-37 | Lists of Voters Registered in the Borough of Carlow | Parl Papers 11(2)(1837) |
| 1852-53 | Griffith's Valuation | . |
| 1858-89 | Census of the RC parish of Bagenalstown | NLI |
| 1858-98 | Wills and Adminstration | SLC1000943-5 |
| Family History | The Blackneys of Ballyellen | CCHC |
| Family History | The Breens of Co. Carlow | CCHC |
| Family History | Cullen-Biographical Material | CCHC |
| Family History | The Earl Cullen Family | CCHC |
| Family History | The Dillons of Carlow | CCHC |
| Family History | The Family of the MacMurrough Kavanaghs | CCHC |
| Family History | Copies of 1841 census returns for McCall Family | CCHC |
| Family History | The Rudkins of the Co. Carlow | CCHC |
| Family History | The Vigors of Leighlinbridge | CCHC |
| Family History | Vigors Papers | CCHC |
| Gravestone Inscriptions | Ballicopagan | Carlow Tomstone Inscriptions Vol. 2 |
| Gravestone Inscriptions | Ballyellen | SLC 6342811 |
| Gravestone Inscriptions | Ballymurphy | Carlow Tomstone Inscriptions Vol. 3 |
| Gravestone Inscriptions | Borris | Carlow Tomstone Inscriptions Vol. 2 |
| Gravestone Inscriptions | Clonagoose | Carlow Tomstone Inscriptions Vol. 2 |
| Gravestone Inscriptions | Dunleckney | SLC 6342811 |
| Gravestone Inscriptions | Kellymount | SLC 6342811 |
| Gravestone Inscriptions | Kilcullen | Carlow Tomstone Inscriptions Vol. 3 |
| Gravestone Inscriptions | Killedmond | Carlow Tomstone Inscriptions Vol. 3 |
| Gravestone Inscriptions | Kiltennel | Carlow Tomstone Inscriptions Vol. 3 |
| Gravestone Inscriptions | Linkardstown | IGRS Collection, GO |
| Gravestone Inscriptions | New Cemetery, Carlow | Carlow Tomstone Inscriptions Vol. 2 |
| Gravestone Inscriptions | Paulstown, Carlow | SLC 6342811 |
| Gravestone Inscriptions | Rathanna, Carlow | Carlow Tomstone Inscriptions Vol. 3 |
| Gravestone Inscriptions | St. Michaels, Carlow | Carlow Tomstone Inscriptions Vol.1 |
| Gravestone Inscriptions | St. Mullins, Carlow | Carlow Tomstone Inscriptions Vol. 1 |
| Gravestone Inscriptions | Wells, Carlow | SLC 6342811 |
| Journals | Carlow Past and Present | CCHC |
| Journals | Carloviana | CCHC |
| Libraries | Carlow county Libraray Dublin Street Carlow | . |
| Misc. | Marriage in Ireland Before the Famines, Case study of Rathvilly Parish | CCHC |
| Misc. | Carlow Past and Present | CCHC |
| Misc. | Bibliography of counties Carlow, Kilkenny, and Wicklow | CCHC |
| Misc. | The Antiquities of Leighlin | CCHC |
| Misc. | The Social State of the Southern and Eastern Counties of Ireland ian the 16th Century | CCHC |
| Misc. | 98 in Carlow | CCHC |
| Misc. | Clonegal Parish (Carlow) | CCHC |
| Misc. | The Parish of Ballon, Co. Carlow | CCHC |
| Misc. | The History and Antiquities of the County Carlow | CCHC |
| Newspaper | Carlow Independent | BL |
| Newspaper | Carlow Morning Post | BL |
| Newspaper | Carlow Nationalist and Leinster Times | BL |
| Newspaper | Carlow Post | BL |
| Newspaper | Carlow Sentinel | BL |
| Newspaper | Carlow Standard | BL |
| Newspaper | Carlow Vindicator | BL |
| Newspaper | Carlow Weekly News | BL |
| Newspaper | Leinster Reformer | BL |
| Research Services | Carlow Genealogy Project Old School, College Street Carlow | . |
| Research Services | Carlow County Heritage society Kennedy St. Carlow Town, Ireland | . |
| Research Services | Irish Origins Research Agency College Road, Kilkenny | . |
| Socieities | Carlow County Heritage Society | . |
| Socieities | Old Carlow Society | . |
| Socieities | Tullowphelim Historical society | |
| Socieities | West Wicklow Historical society | |
| Wills | Prerogative Wills | . |
| Wills | Consistorial Wills (Dioccese of Leighlin) | . |
| Wills | Index to Leighlin Intestate Adminis | SLC 990403 |